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A Control Method of Swing Moment of Flexible Joint of Nozzle

A technology of flexible joints and control methods, which is applied in the direction of tubular objects, household appliances, and other household appliances, and can solve the problems of discrete swing torque of flexible joints, and achieve the effect of low cost and simple process

Active Publication Date: 2021-06-08
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the problems existing in the background technology, the purpose of the present invention is to propose a nozzle that solves the discreteness of the swing moment of the flexible joint without changing the structural size and material of the flexible joint, so as to achieve precise control of the characteristics of the swing torque of the flexible joint Control Method of Swing Moment of Flexible Joint

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] For a flexible joint produced with a certain structural size and a certain rubber material, the torque required to be controlled is 4000N m, that is, the target value M 1 =4000N m, the production process is as follows:

[0022] S1, rubber compound preparation: preparation → mastication → kneading → calendering → sheeting.

[0023] S2, test the vulcanization curve of the mixed rubber according to the standard GB / T 16584, and obtain the highest torque Fmax of the mixed rubber 0 =0.702N·m.

[0024] S3, use the compound rubber to mold the flexible joint, and test its swinging moment of 5000N m, that is, the reference value M 0 =5000N·m.

[0025] S4, the method of controlling the torque of the flexible joint: regrind the rubber compound on the open mill → calender → sheet, test the vulcanization curve according to the standard GB / T 16584, and control the maximum torque F’max of the rubber compound 1 , making it close to 0.560N m:

[0026] Among them: check the roll temp...

Embodiment 2

[0030] For a flexible joint produced with a certain structural size and a certain rubber material, the torque required to be controlled is 3000N m, that is, the target value M 1 =3000N m, the production process is as follows:

[0031] S1, rubber compound preparation: preparation → mastication → kneading → calendering → sheeting.

[0032] S2, according to the standard GB / T 16584, test the vulcanization curve of the mixed rubber to obtain the highest torque Fmax of the mixed rubber 0 =0.702N·m.

[0033] S3, use the compound rubber to mold the flexible joint, and test its swinging moment of 5000N m, that is, the reference value M 0 =5000N·m.

[0034] S4, the method of controlling the torque of the flexible joint: regrind the rubber compound on the open mill → calender → sheet, test the vulcanization curve according to the standard GB / T 16584, and control the maximum torque F’max of the rubber compound 1 , making it close to 0.420N m:

[0035] Among them: return the mixed rub...

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PUM

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Abstract

The invention discloses a method for controlling the swing torque of a flexible joint of a nozzle, which solves the problem of discreteness of the swing torque of the flexible joint without changing the structural size and material of the flexible joint, so as to achieve precise control of the swing torque characteristics of the flexible joint, and the process is simple. low cost.

Description

technical field [0001] The invention relates to the field of solid rocket motors, in particular to a method for controlling the swing moment of a flexible joint of a nozzle of a solid rocket motor. Background technique [0002] The solid rocket motor is the power device of the spacecraft, which is composed of the main parts such as the combustion chamber (with propellant grain), the nozzle and the igniter. The flexible joint of the nozzle is a component that connects the movable body and the fixed body of the nozzle, so that the nozzle has a full-axis swing function and can adjust the thrust vector. [0003] The flexible joint is a component that is alternately bonded to each other by the front and rear flanges, the annular reinforcement and the elastic piece. The elastic parts are mainly rubber materials, and the front and rear flanges and reinforcements are mainly steel, aluminum alloy, titanium alloy or fiber composite materials. Since the bulk compressive modulus of ru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B7/00B29D23/00
CPCB29B7/007B29D23/003
Inventor 陈祥王付青云晏述亮钟织富
Owner 湖北三江航天江北机械工程有限公司